US11435497B2ActiveUtilityA1

Three dimensional visualization from point-by-point one dimensional inversion with bed azimuth

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Assignee: HALLIBURTON ENERGY SERVICES INCPriority: Sep 22, 2018Filed: Sep 13, 2019Granted: Sep 6, 2022
Est. expirySep 22, 2038(~12.2 yrs left)· nominal 20-yr term from priority
E21B 49/00G01V 3/26G01V 3/28E21B 7/04G06T 17/05G01V 3/38G01V 3/20E21B 44/00E21B 41/00E21B 41/0092
54
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Claims

Abstract

Data filtering and processing techniques for generating improved wellbore resistivity maps are contemplated. In some aspects, a process of the disclosed technology includes steps for receiving a plurality of measurement sets, wherein each measurement set comprises electromagnetic field data associated with a geologic formation at a corresponding plurality of predetermined depths, generating a plurality of one-dimensional (1D) inversion results based on the plurality of measurement sets, and performing a three-dimensional (3D) interpolation on the plurality of 1D inversion results to generate interpolated 3D resistivity data. In some aspects, the disclosed technology further includes steps for outputting a 3D resistivity map based on the interpolated 3D resistivity data. Systems and machine-readable media are also provided.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A computer-implemented method for generating a resistivity map, comprising:
 receiving a plurality of measurement sets, wherein each measurement set comprises electromagnetic field data associated with a geologic formation at a corresponding plurality of predetermined depths; 
 generating a plurality of one-dimensional (1D) inversion results based on the plurality of measurement sets; 
 performing a three-dimensional (3D) interpolation on the plurality of 1D inversion results to generate interpolated 3D resistivity data by applying an interpolation technique to continuous and adjacent 1D inversion results of the plurality of 1D inversion results based on a corresponding local coordinate system for each 1D inversion result; and 
 outputting a 3D resistivity map based on the interpolated 3D resistivity data. 
 
     
     
       2. The computer-implemented method of  claim 1 , further comprising:
 performing one or more geosteering operations based on the 3D resistivity map. 
 
     
     
       3. The computer-implemented method of  claim 1 , wherein the plurality of predetermined depths are continuous. 
     
     
       4. The computer-implemented method of  claim 1 , wherein generating the plurality of 1D inversion results, further comprises:
 determining a relative bed azimuth for each of the plurality of 1D inversion results. 
 
     
     
       5. The computer-implemented method of  claim 1 , wherein generating the plurality of 1D inversion results, further comprises:
 defining one or more measurements for each of the plurality of 1D inversion results. 
 
     
     
       6. The computer-implemented method of  claim 1 , wherein each of the plurality of 1D inversion results is in a different coordinate plane. 
     
     
       7. The computer-implemented method of  claim 1 , wherein the interpolated 3D resistivity data is provided as an input model into a two-dimensional (2D) or 3D inversion model to acquire an optimized final 2D or 3D inverted model. 
     
     
       8. A system for generating a wellbore resistivity map, the system comprising:
 one or more processors; and 
 a non-transitory memory coupled to the one or more processors, wherein the memory comprises instruction configured to cause the processors to perform operations for:
 receiving a plurality of measurement sets, wherein each measurement set comprises electromagnetic field data associated with a geologic formation at a corresponding plurality of predetermined depths; 
 generating a plurality of one-dimensional (1D) inversion results based on the plurality of measurement sets; 
 performing a three-dimensional (3D) interpolation on the plurality of 1D inversion results to generate interpolated 3D resistivity data by applying an interpolation technique to continuous and adjacent 1D inversion results of the plurality of 1D inversion results based on a corresponding local coordinate system for each 1D inversion result; and 
 outputting a 3D resistivity map based on the interpolated 3D resistivity data. 
 
 
     
     
       9. The system of  claim 8 , further comprising:
 performing one or more geosteering operations based on the 3D resistivity map. 
 
     
     
       10. The system of  claim 8 , wherein the plurality of predetermined depths are continuous. 
     
     
       11. The system of  claim 8 , wherein generating the plurality of 1D inversion results, further comprises:
 determining a relative bed azimuth for each of the plurality of 1D inversion results. 
 
     
     
       12. The system of  claim 8 , wherein generating the plurality of 1D inversion results, further comprises:
 defining one or more measurements for each of the plurality of 1D inversion results. 
 
     
     
       13. The system of  claim 8 , wherein each of the plurality of 1D inversion results is in a different coordinate plane. 
     
     
       14. The system of  claim 8 , wherein the interpolated 3D resistivity data is provided as an input model into a two-dimensional (2D) or 3D inversion model to acquire an optimized final 2D or 3D inverted model. 
     
     
       15. A tangible, non-transitory, computer-readable media having instructions encoded thereon, the instructions, when executed by a processor, are operable to perform operations for:
 receiving a plurality of measurement sets, wherein each measurement set comprises electromagnetic field data associated with a geologic formation at a corresponding plurality of predetermined depths; 
 generating a plurality of one-dimensional (1D) inversion results based on the plurality of measurement sets; 
 performing a three-dimensional (3D) interpolation on the plurality of 1D inversion results to generate interpolated 3D resistivity data by applying an interpolation technique to continuous and adjacent 1D inversion results of the plurality of 1D inversion results based on a corresponding local coordinate system for each 1D inversion result; and 
 outputting a 3D resistivity map based on the interpolated 3D resistivity data. 
 
     
     
       16. The tangible, non-transitory, computer-readable media of  claim 15 , wherein the instructions are further configured to cause the processor to perform operations comprising:
 performing one or more geosteering operations based on the 3D resistivity map. 
 
     
     
       17. The tangible, non-transitory, computer-readable media of  claim 15 , wherein the plurality of predetermined depths are continuous. 
     
     
       18. The tangible, non-transitory, computer-readable media of  claim 15 , wherein generating the plurality of 1D inversion results, further comprises:
 determining a relative bed azimuth for each of the plurality of 1D inversion results. 
 
     
     
       19. The tangible, non-transitory, computer-readable media of  claim 15 , wherein generating the plurality of 1D inversion results, further comprises:
 defining one or more measurements for each of the plurality of 1D inversion results. 
 
     
     
       20. The tangible, non-transitory, computer-readable media of  claim 15 , wherein each of the plurality of 1D inversion results is in a different coordinate plane.

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